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Item # 10233CB shown








Unibit Cobalt Step Drill


6X Longer life vs. the competition

M35 grade Cobalt HSS

Radial concave flute

3-Flatted shank

Speedpoint™ tip

Laser marked sizes
Shop Online Item # Description Hole Sizes Number of Holes Increments
10220CB 9/16" - 1"
8 steps
1/16" Hole Enlarging

10231CB 1/8" - 1/2"
13 steps
1/32" Increments

10232CB 3/16" - 1/2"
6 steps
1/16" Increments

10233CB 1/4" - 3/4"
9 steps
1/16" Increments

10234CB 3/16" - 7/8"
12 steps
1/16" Increments

10239CB 7/8" and 1-1/8"
2 steps
for 1/2" and 3/4 KO

11101CB 4mm - 12mm
9 steps
1mm Increments

11102CB 4mm - 12mm
5 steps
2mm Increments

11103CB 6mm - 18mm
7 steps
2mm Increments

11104CB 4mm - 22mm
10 steps
2mm Increments

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